My HH65 has been needing extra pedal pressure to trigger the closed cymbals sound. I found the pedal pushes down on a curved rubber block with 4 small ridges underneath it which progressively activate separate switch-pads. I think the problem was due to the rubber block not pressing enough on the last pad (furthest from the block's fixed end). So I tried raising it's mounting bracket slightly by moving 2 flat washers from the screw heads to underneath the bracket and to my surprise the cymbal triggering improved with less foot pressure required. I wouldn't raise it much more just in case it affects any of the other 3 pads operating properly. The pic shows how I've also raised the pedal angle a bit by moving the toe bracket to the pedal underside.
This might help anyone else with a sore left ankle.

I think the problem was due to the rubber block not pressing enough on the last pad (furthest from the block's fixed end). So I tried raising it's mounting bracket slightly by moving 2 flat washers from the screw heads to underneath the bracket and to my surprise the cymbal triggering improved with less foot pressure required.

sorry to open a old thread but I am having this problem.
what two screws did you add washers to? I am not understanding the fix.

Here's another view of the 2 screws securing the mounting bracket for the curved rubber block. The flat washers are fitted between the pedal base plate and the bracket to raise the rubber block slightly.